Pipe-wrench



(No Model.)-

J. J. TOWER.

PIPE WRENGH.

No. 280,099. Patented June 26, 1883.

UNITED STATES JOHN J. TOYER, OF BROOKLYN, NEW YORK.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Application filed May Patent No.280,099, dated June 26, 1883.

21, 1883. (No model.)

To aZZ whom it may concern.-

Be it known that 1, JOHN J. TOWER, of Brooklyn, in the county of Kingsand State of New York, have invented an Improvement in PipeWVrenches, ofwhich the following is a specification.

lVrenches have been made with the stationary jaw in the form of a T-head and the other jaw movable on the body of the wrench, and one sideof such jaw adapted to nuts and similar polygonal articles, and theother side having a swinging toothed jaw adapted to grasping a pipe orrod. in these articles the swinging pipejaw is liable to undue i'rictionupon the ears that retain it in place, and against which the pressure isapplied, or else thejaw is attached by a pin in an elongated hole, whichpin is liable to be bent.

My wrench has been constructed with reference to avoiding thebetorenamed ditliculties and it consists in combining with the movingjaw of the wrench a loop that forms a support, I a moving toothed jawwithin such loop, a i rounding pivotal. end to such toothed jaw, and apin in the jaw acting against the loop to retain the toothed jaw inplace. By this improvement the rounding pivotal end takes the entirestrain of the toothed jaw when in use, the loop supports the sameagainst lateral dis placement, and the pin simply prevents the toothedjaw becoming misplaced when not in use.

In the drawings, Figure l is a side view oftheimproved wrench, and Fig.2 is a perspective view of the toothed j aw.

The body a of the wrench is provided with a handle at one end, as usual,and with a T- head at the other end, having one fiat-faced jaw, b, andanother V-recessed jaw, 0. Upon the body a is the sliding jaw d, that ismoved by a nut, 0, upon the screw-edges of the body, as usual. At theback of this jaw (I there is a projection, 1', with a semicircularrecess, into which is received the similarly-shaped end of the toothedjaw 71., the other end of which is provided with transverse serrations,and the body part of this jaw 71 passes through the loop 7:, that isformed with and extends out from the moving wrench-j aw (7, and there isa transverse pin, 7, in the body of the toothed jaw, which,

acting below the loop Ir, serves to retain the jaw in, place. It,however, is not exposed to any strain when the wrench is applied to a'pipe, because the thrust and strain are against the projection 1 upagainst the side of the pipe or other article that is grasped betweenthe same and the V- recess in the jaw c, and the teeth of said jaw arepressed into the said pipe to grasp and turn the same when the wrench ismoved, because the toothed jaw is like a toggle in its action and swingsupon its pivotal end as the strain is applied; hence the action is verypowerful and reliable.

lelaim as my invention-- .1. The combination, with the body and doublehead at the end thereof, of the sliding jaw (I, having the projection i,with asemicircular recess, the toothcdj aw 71, with a rounding pivotalend, the loop is, extending out from the jaw d. and receiving thetoothed jaw, and the pin l in the toothed jaw, for retaining the same inplace, substantially as set forth.

2. The combination, with the body and the V-jaw c, of the sliding jaw(I, having the projection, '1'. and semicircular recess, the toothed jaw71, and with a rounding pivotal end, the loop 7;, extending out from thejaw (Z to receive the toothed jaw, and means for retaining suchtoothedjaw in place, substantially as set forth.

Signed by me this 18th day of May, A. D. 1883. v

JOHN J. TOXVER.

\Vi tn esses:

Gno. T. PINCKNEY, \VILTJAM'G. Moan.

The toothed jaw to be set g

